README.md

metadata

pretty_name: LibriTTS Corpus with Forced Alignments
annotations_creators:
  - crowdsourced
language: en
tags:
  - speech
  - audio
  - automatic-speech-recognition
  - text-to-speech
license:
  - cc-by-4.0
task_categories:
  - automatic-speech-recognition
  - text-to-speech
extra_gated_prompt: >-
  When using this dataset to download LibriTTS, you agree to the terms on
  https://www.openslr.org

Dataset Card for LibriTTS with Forced Alignments (and Measures)

This dataset downloads LibriTTS and preprocesses it on your machine to create alignments using montreal forced aligner. You need to run pip install alignments phones before using this dataset. When running this the first time, it can take an hour or two, but subsequent runs will be lightning fast.

Splits

This dataset has the following splits:

• train: All the training data, except one sample per speaker which is used for validation.
• dev: The validation data, one sample per speaker.
• train.clean.100: Training set derived from the original materials of the train-clean-100 subset of LibriSpeech.
• train.clean.360: Training set derived from the original materials of the train-clean-360 subset of LibriSpeech.
• train.other.500: Training set derived from the original materials of the train-other-500 subset of LibriSpeech.
• dev.clean: Validation set derived from the original materials of the dev-clean subset of LibriSpeech.
• dev.other: Validation set derived from the original materials of the dev-other subset of LibriSpeech.
• test.clean: Test set derived from the original materials of the test-clean subset of LibriSpeech.
• test.other: Test set derived from the original materials of the test-other subset of LibriSpeech.

Example Item

{
    'id': '100_122655_000073_000002.wav',
    'speaker': '100',
    'text': 'the day after, diana and mary quitted it for distant b.',
    'start': 0.0,
    'end': 3.6500000953674316, 
    'phones': ['[SILENCE]', 'ð', 'ʌ', '[SILENCE]', 'd', 'eɪ', '[SILENCE]', 'æ', 'f', 't', 'ɜ˞', '[COMMA]', 'd', 'aɪ', 'æ', 'n', 'ʌ', '[SILENCE]', 'æ', 'n', 'd', '[SILENCE]', 'm', 'ɛ', 'ɹ', 'i', '[SILENCE]', 'k', 'w', 'ɪ', 't', 'ɪ', 'd', '[SILENCE]', 'ɪ', 't', '[SILENCE]', 'f', 'ɜ˞', '[SILENCE]', 'd', 'ɪ', 's', 't', 'ʌ', 'n', 't', '[SILENCE]', 'b', 'i', '[FULL STOP]'], 
    'phone_durations': [5, 2, 4, 0, 5, 13, 0, 16, 7, 5, 20, 2, 6, 9, 15, 4, 2, 0, 11, 3, 5, 0, 3, 8, 9, 8, 0, 13, 3, 5, 3, 6, 4, 0, 8, 5, 0, 9, 5, 0, 7, 5, 6, 7, 4, 5, 10, 0, 3, 35, 9],
    'audio': '/dev/shm/metts/train-clean-360-alignments/100/100_122655_000073_000002.wav'
}

The phones are IPA phones, and the phone durations are in frames (assuming a hop length of 256, sample rate of 22050 and window length of 1024). These attributes can be changed using the hop_length, sample_rate and window_length arguments to LibriTTSAlign.

Environment Variables

There are a few environment variable which can be set.

• LIBRITTS_VERBOSE: If set, will print out more information about the dataset creation process.
• LIBRITTS_MAX_WORKERS: The number of workers to use when creating the alignments. Defaults to cpu_count().
• LIBRITTS_PATH: The path to download LibriTTS to. Defaults to the value of HF_DATASETS_CACHE.

Data Collator

This dataset comes with a data collator which can be used to create batches of data for training. It can be installed using pip install speech-collator (MiniXC/speech-collator) and can be used as follows:

import json
from datasets import load_dataset
from speech_collator import SpeechCollator
from torch.utils.data import DataLoader

dataset = load_dataset('libritts_align', split="train")

speaker2ixd = json.load(open("speaker2idx.json"))
phone2ixd = json.load(open("phone2idx.json"))

collator = SpeechCollator(
    speaker2ixd=speaker2idx,
    phone2ixd=phone2idx ,
)
dataloader = DataLoader(dataset, collate_fn=collator.collate_fn, batch_size=8)

You can either download the speaker2idx.json and phone2idx.json files from here or create them yourself using the following code:

import json
from datasets import load_dataset
from speech_collator import SpeechCollator, create_speaker2idx, create_phone2idx

dataset = load_dataset("cdminix/libritts-aligned", split="train")

# Create speaker2idx and phone2idx
speaker2idx = create_speaker2idx(dataset, unk_idx=0)
phone2idx = create_phone2idx(dataset, unk_idx=0)

# save to json
with open("speaker2idx.json", "w") as f:
    json.dump(speaker2idx, f)
with open("phone2idx.json", "w") as f:
    json.dump(phone2idx, f)